CVE-2019-17572 : Vulnerability Insights and Analysis

Apache RocketMQ versions 4.2.0 to 4.6.0 are affected by a directory traversal vulnerability due to a default setting in the broker that allows automatic topic creation. Attackers can exploit this by sending a malicious topic name, leading to directory traversal.

Understanding CVE-2019-17572

This CVE involves a vulnerability in Apache RocketMQ versions 4.2.0 to 4.6.0 that enables directory traversal through malicious topic creation.

What is CVE-2019-17572?

In Apache RocketMQ 4.2.0 to 4.6.0, a default setting in the broker allows automatic topic creation. Sending a specific malicious topic name can trigger directory traversal.

The Impact of CVE-2019-17572

The vulnerability can be exploited by attackers to create a topic folder in the parent directory of the brokers, potentially leading to unauthorized access to sensitive files.

Technical Details of CVE-2019-17572

Apache RocketMQ directory traversal vulnerability details.

Vulnerability Description

Default setting in the broker enables automatic topic creation
Sending a malicious topic name triggers directory traversal

Affected Systems and Versions

Product: Apache RocketMQ
Versions: 4.2.0 to 4.6.0

Exploitation Mechanism

Attackers send a malicious topic name like "../../../../topic2020" from rocketmq-client to the broker
Results in the creation of a topic folder in the parent directory of the brokers

Mitigation and Prevention

Protect your systems from CVE-2019-17572.

Immediate Steps to Take

Upgrade to Apache RocketMQ version 4.6.1 or later

Long-Term Security Practices

Regularly monitor and update Apache RocketMQ versions
Implement access controls and restrictions to prevent unauthorized access

Patching and Updates

Apply patches and updates provided by Apache RocketMQ to address the vulnerability